Definitions for "Cost Per Acquisition"
The cost incurred to complete a desired act on a site, whether a purchase, form, or application filled out. ost per click (CPC): The cost incurred when a visitor clicks on a listing, whether it be for a keyword buy, paid search engine listing, or a link on a site.
This is similar to pay-per-click (PPC) advertising but it refers to an acquisition rather than a click. All the advertisers you will list on your site will be paying you on a CPA basis.
The cost per aquisition is the cost for every sale or registration that your site makes.